890 lines
20 KiB
C
890 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* NXP TDA18250 silicon tuner driver
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*
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* Copyright (C) 2017 Olli Salonen <olli.salonen@iki.fi>
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*/
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#include "tda18250_priv.h"
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#include <linux/regmap.h>
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static const struct dvb_tuner_ops tda18250_ops;
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static int tda18250_power_control(struct dvb_frontend *fe,
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unsigned int power_state)
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{
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struct i2c_client *client = fe->tuner_priv;
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struct tda18250_dev *dev = i2c_get_clientdata(client);
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int ret;
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unsigned int utmp;
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dev_dbg(&client->dev, "power state: %d", power_state);
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switch (power_state) {
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case TDA18250_POWER_NORMAL:
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ret = regmap_write_bits(dev->regmap, R06_POWER2, 0x07, 0x00);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap, R25_REF, 0xc0, 0xc0);
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if (ret)
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goto err;
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break;
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case TDA18250_POWER_STANDBY:
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if (dev->loopthrough) {
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ret = regmap_write_bits(dev->regmap,
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R25_REF, 0xc0, 0x80);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap,
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R06_POWER2, 0x07, 0x02);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap,
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R10_LT1, 0x80, 0x00);
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if (ret)
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goto err;
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} else {
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ret = regmap_write_bits(dev->regmap,
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R25_REF, 0xc0, 0x80);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap,
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R06_POWER2, 0x07, 0x01);
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if (ret)
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goto err;
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ret = regmap_read(dev->regmap,
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R0D_AGC12, &utmp);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap,
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R0D_AGC12, 0x03, 0x03);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap,
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R10_LT1, 0x80, 0x80);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap,
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R0D_AGC12, 0x03, utmp & 0x03);
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if (ret)
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goto err;
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}
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break;
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default:
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ret = -EINVAL;
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goto err;
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}
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return 0;
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err:
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return ret;
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}
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static int tda18250_wait_for_irq(struct dvb_frontend *fe,
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int maxwait, int step, u8 irq)
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{
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struct i2c_client *client = fe->tuner_priv;
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struct tda18250_dev *dev = i2c_get_clientdata(client);
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int ret;
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unsigned long timeout;
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bool triggered;
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unsigned int utmp;
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triggered = false;
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timeout = jiffies + msecs_to_jiffies(maxwait);
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while (!time_after(jiffies, timeout)) {
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// check for the IRQ
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ret = regmap_read(dev->regmap, R08_IRQ1, &utmp);
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if (ret)
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goto err;
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if ((utmp & irq) == irq) {
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triggered = true;
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break;
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}
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msleep(step);
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}
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dev_dbg(&client->dev, "waited IRQ (0x%02x) %d ms, triggered: %s", irq,
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jiffies_to_msecs(jiffies) -
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(jiffies_to_msecs(timeout) - maxwait),
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triggered ? "true" : "false");
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if (!triggered)
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return -ETIMEDOUT;
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return 0;
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err:
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return ret;
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}
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static int tda18250_init(struct dvb_frontend *fe)
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{
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struct i2c_client *client = fe->tuner_priv;
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struct tda18250_dev *dev = i2c_get_clientdata(client);
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int ret, i;
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/* default values for various regs */
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static const u8 init_regs[][2] = {
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{ R0C_AGC11, 0xc7 },
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{ R0D_AGC12, 0x5d },
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{ R0E_AGC13, 0x40 },
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{ R0F_AGC14, 0x0e },
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{ R10_LT1, 0x47 },
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{ R11_LT2, 0x4e },
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{ R12_AGC21, 0x26 },
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{ R13_AGC22, 0x60 },
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{ R18_AGC32, 0x37 },
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{ R19_AGC33, 0x09 },
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{ R1A_AGCK, 0x00 },
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{ R1E_WI_FI, 0x29 },
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{ R1F_RF_BPF, 0x06 },
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{ R20_IR_MIX, 0xc6 },
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{ R21_IF_AGC, 0x00 },
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{ R2C_PS1, 0x75 },
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{ R2D_PS2, 0x06 },
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{ R2E_PS3, 0x07 },
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{ R30_RSSI2, 0x0e },
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{ R31_IRQ_CTRL, 0x00 },
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{ R39_SD5, 0x00 },
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{ R3B_REGU, 0x55 },
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{ R3C_RCCAL1, 0xa7 },
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{ R3F_IRCAL2, 0x85 },
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{ R40_IRCAL3, 0x87 },
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{ R41_IRCAL4, 0xc0 },
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{ R43_PD1, 0x40 },
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{ R44_PD2, 0xc0 },
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{ R46_CPUMP, 0x0c },
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{ R47_LNAPOL, 0x64 },
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{ R4B_XTALOSC1, 0x30 },
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{ R59_AGC2_UP2, 0x05 },
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{ R5B_AGC_AUTO, 0x07 },
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{ R5C_AGC_DEBUG, 0x00 },
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};
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/* crystal related regs depend on frequency */
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static const u8 xtal_regs[][5] = {
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/* reg: 4d 4e 4f 50 51 */
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[TDA18250_XTAL_FREQ_16MHZ] = { 0x3e, 0x80, 0x50, 0x00, 0x20 },
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[TDA18250_XTAL_FREQ_24MHZ] = { 0x5d, 0xc0, 0xec, 0x00, 0x18 },
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[TDA18250_XTAL_FREQ_25MHZ] = { 0x61, 0xa8, 0xec, 0x80, 0x19 },
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[TDA18250_XTAL_FREQ_27MHZ] = { 0x69, 0x78, 0x8d, 0x80, 0x1b },
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[TDA18250_XTAL_FREQ_30MHZ] = { 0x75, 0x30, 0x8f, 0x00, 0x1e },
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};
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dev_dbg(&client->dev, "\n");
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ret = tda18250_power_control(fe, TDA18250_POWER_NORMAL);
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if (ret)
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goto err;
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msleep(20);
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if (dev->warm)
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goto warm;
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/* set initial register values */
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for (i = 0; i < ARRAY_SIZE(init_regs); i++) {
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ret = regmap_write(dev->regmap, init_regs[i][0],
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init_regs[i][1]);
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if (ret)
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goto err;
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}
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/* set xtal related regs */
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ret = regmap_bulk_write(dev->regmap, R4D_XTALFLX1,
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xtal_regs[dev->xtal_freq], 5);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap, R10_LT1, 0x80,
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dev->loopthrough ? 0x00 : 0x80);
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if (ret)
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goto err;
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/* clear IRQ */
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ret = regmap_write(dev->regmap, R0A_IRQ3, TDA18250_IRQ_HW_INIT);
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if (ret)
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goto err;
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/* start HW init */
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ret = regmap_write(dev->regmap, R2A_MSM1, 0x70);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, R2B_MSM2, 0x01);
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if (ret)
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goto err;
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ret = tda18250_wait_for_irq(fe, 500, 10, TDA18250_IRQ_HW_INIT);
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if (ret)
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goto err;
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/* tuner calibration */
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ret = regmap_write(dev->regmap, R2A_MSM1, 0x02);
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if (ret)
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goto err;
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ret = regmap_write(dev->regmap, R2B_MSM2, 0x01);
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if (ret)
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goto err;
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ret = tda18250_wait_for_irq(fe, 500, 10, TDA18250_IRQ_CAL);
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if (ret)
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goto err;
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dev->warm = true;
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warm:
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/* power up LNA */
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ret = regmap_write_bits(dev->regmap, R0C_AGC11, 0x80, 0x00);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d", ret);
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return ret;
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}
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static int tda18250_set_agc(struct dvb_frontend *fe)
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{
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struct i2c_client *client = fe->tuner_priv;
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struct tda18250_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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u8 utmp, utmp2;
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dev_dbg(&client->dev, "\n");
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ret = regmap_write_bits(dev->regmap, R1F_RF_BPF, 0x87, 0x06);
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if (ret)
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goto err;
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utmp = ((c->frequency < 100000000) &&
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((c->delivery_system == SYS_DVBC_ANNEX_A) ||
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(c->delivery_system == SYS_DVBC_ANNEX_C)) &&
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(c->bandwidth_hz == 6000000)) ? 0x80 : 0x00;
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ret = regmap_write(dev->regmap, R5A_H3H5, utmp);
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if (ret)
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goto err;
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/* AGC1 */
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switch (c->delivery_system) {
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case SYS_ATSC:
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case SYS_DVBT:
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case SYS_DVBT2:
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utmp = 4;
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break;
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default: /* DVB-C/QAM */
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switch (c->bandwidth_hz) {
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case 6000000:
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utmp = (c->frequency < 800000000) ? 6 : 4;
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break;
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default: /* 7.935 and 8 MHz */
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utmp = (c->frequency < 100000000) ? 2 : 3;
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break;
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}
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break;
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}
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ret = regmap_write_bits(dev->regmap, R0C_AGC11, 0x07, utmp);
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if (ret)
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goto err;
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/* AGC2 */
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switch (c->delivery_system) {
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case SYS_ATSC:
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case SYS_DVBT:
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case SYS_DVBT2:
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utmp = (c->frequency < 320000000) ? 20 : 16;
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utmp2 = (c->frequency < 320000000) ? 22 : 18;
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break;
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default: /* DVB-C/QAM */
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switch (c->bandwidth_hz) {
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case 6000000:
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if (c->frequency < 600000000) {
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utmp = 18;
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utmp2 = 22;
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} else if (c->frequency < 800000000) {
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utmp = 16;
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utmp2 = 20;
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} else {
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utmp = 14;
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utmp2 = 16;
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}
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break;
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default: /* 7.935 and 8 MHz */
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utmp = (c->frequency < 320000000) ? 16 : 18;
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utmp2 = (c->frequency < 320000000) ? 18 : 20;
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break;
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}
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break;
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}
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ret = regmap_write_bits(dev->regmap, R58_AGC2_UP1, 0x1f, utmp2+8);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap, R13_AGC22, 0x1f, utmp);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap, R14_AGC23, 0x1f, utmp2);
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if (ret)
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goto err;
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switch (c->delivery_system) {
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case SYS_ATSC:
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case SYS_DVBT:
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case SYS_DVBT2:
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utmp = 98;
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break;
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default: /* DVB-C/QAM */
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utmp = 90;
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break;
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}
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ret = regmap_write_bits(dev->regmap, R16_AGC25, 0xf8, utmp);
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if (ret)
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goto err;
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ret = regmap_write_bits(dev->regmap, R12_AGC21, 0x60,
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(c->frequency > 800000000) ? 0x40 : 0x20);
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if (ret)
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goto err;
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/* AGC3 */
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switch (c->delivery_system) {
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case SYS_ATSC:
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case SYS_DVBT:
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case SYS_DVBT2:
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utmp = (c->frequency < 320000000) ? 5 : 7;
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utmp2 = (c->frequency < 320000000) ? 10 : 12;
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break;
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default: /* DVB-C/QAM */
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utmp = 7;
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utmp2 = 12;
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break;
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}
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ret = regmap_write(dev->regmap, R17_AGC31, (utmp << 4) | utmp2);
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if (ret)
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goto err;
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/* S2D */
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switch (c->delivery_system) {
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case SYS_ATSC:
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case SYS_DVBT:
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case SYS_DVBT2:
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if (c->bandwidth_hz == 8000000)
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utmp = 0x04;
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else
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utmp = (c->frequency < 320000000) ? 0x04 : 0x02;
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break;
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default: /* DVB-C/QAM */
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if (c->bandwidth_hz == 6000000)
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utmp = ((c->frequency > 172544000) &&
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(c->frequency < 320000000)) ? 0x04 : 0x02;
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else /* 7.935 and 8 MHz */
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utmp = ((c->frequency > 320000000) &&
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(c->frequency < 600000000)) ? 0x02 : 0x04;
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break;
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}
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ret = regmap_write_bits(dev->regmap, R20_IR_MIX, 0x06, utmp);
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if (ret)
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goto err;
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switch (c->delivery_system) {
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case SYS_ATSC:
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case SYS_DVBT:
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case SYS_DVBT2:
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utmp = 0;
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break;
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default: /* DVB-C/QAM */
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utmp = (c->frequency < 600000000) ? 0 : 3;
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break;
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}
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ret = regmap_write_bits(dev->regmap, R16_AGC25, 0x03, utmp);
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if (ret)
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goto err;
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utmp = 0x09;
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switch (c->delivery_system) {
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case SYS_ATSC:
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case SYS_DVBT:
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case SYS_DVBT2:
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if (c->bandwidth_hz == 8000000)
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utmp = 0x0c;
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break;
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default: /* DVB-C/QAM */
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utmp = 0x0c;
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break;
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}
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ret = regmap_write_bits(dev->regmap, R0F_AGC14, 0x3f, utmp);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&client->dev, "failed=%d", ret);
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return ret;
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}
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static int tda18250_pll_calc(struct dvb_frontend *fe, u8 *rdiv,
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u8 *ndiv, u8 *icp)
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{
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struct i2c_client *client = fe->tuner_priv;
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struct tda18250_dev *dev = i2c_get_clientdata(client);
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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int ret;
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unsigned int uval, exp, lopd, scale;
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unsigned long fvco;
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ret = regmap_read(dev->regmap, R34_MD1, &uval);
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if (ret)
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goto err;
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exp = (uval & 0x70) >> 4;
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if (exp > 5)
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exp = 0;
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lopd = 1 << (exp - 1);
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scale = uval & 0x0f;
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fvco = lopd * scale * ((c->frequency / 1000) + dev->if_frequency);
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switch (dev->xtal_freq) {
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case TDA18250_XTAL_FREQ_16MHZ:
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*rdiv = 1;
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*ndiv = 0;
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*icp = (fvco < 6622000) ? 0x05 : 0x02;
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break;
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case TDA18250_XTAL_FREQ_24MHZ:
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case TDA18250_XTAL_FREQ_25MHZ:
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*rdiv = 3;
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*ndiv = 1;
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*icp = (fvco < 6622000) ? 0x05 : 0x02;
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break;
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case TDA18250_XTAL_FREQ_27MHZ:
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if (fvco < 6643000) {
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*rdiv = 2;
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*ndiv = 0;
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*icp = 0x05;
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} else if (fvco < 6811000) {
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*rdiv = 2;
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*ndiv = 0;
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*icp = 0x06;
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} else {
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*rdiv = 3;
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*ndiv = 1;
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*icp = 0x02;
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}
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break;
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case TDA18250_XTAL_FREQ_30MHZ:
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*rdiv = 2;
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*ndiv = 0;
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*icp = (fvco < 6811000) ? 0x05 : 0x02;
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break;
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default:
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return -EINVAL;
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}
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|
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dev_dbg(&client->dev,
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"lopd=%d scale=%u fvco=%lu, rdiv=%d ndiv=%d icp=%d",
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lopd, scale, fvco, *rdiv, *ndiv, *icp);
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return 0;
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err:
|
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return ret;
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}
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|
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static int tda18250_set_params(struct dvb_frontend *fe)
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|
{
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struct i2c_client *client = fe->tuner_priv;
|
|
struct tda18250_dev *dev = i2c_get_clientdata(client);
|
|
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
|
|
u32 if_khz;
|
|
int ret;
|
|
unsigned int i, j;
|
|
u8 utmp;
|
|
u8 buf[3];
|
|
|
|
#define REG 0
|
|
#define MASK 1
|
|
#define DVBT_6 2
|
|
#define DVBT_7 3
|
|
#define DVBT_8 4
|
|
#define DVBC_6 5
|
|
#define DVBC_8 6
|
|
#define ATSC 7
|
|
|
|
static const u8 delsys_params[][16] = {
|
|
[REG] = { 0x22, 0x23, 0x24, 0x21, 0x0d, 0x0c, 0x0f, 0x14,
|
|
0x0e, 0x12, 0x58, 0x59, 0x1a, 0x19, 0x1e, 0x30 },
|
|
[MASK] = { 0x77, 0xff, 0xff, 0x87, 0xf0, 0x78, 0x07, 0xe0,
|
|
0x60, 0x0f, 0x60, 0x0f, 0x33, 0x30, 0x80, 0x06 },
|
|
[DVBT_6] = { 0x51, 0x03, 0x83, 0x82, 0x40, 0x48, 0x01, 0xe0,
|
|
0x60, 0x0f, 0x60, 0x05, 0x03, 0x10, 0x00, 0x04 },
|
|
[DVBT_7] = { 0x52, 0x03, 0x85, 0x82, 0x40, 0x48, 0x01, 0xe0,
|
|
0x60, 0x0f, 0x60, 0x05, 0x03, 0x10, 0x00, 0x04 },
|
|
[DVBT_8] = { 0x53, 0x03, 0x87, 0x82, 0x40, 0x48, 0x06, 0xe0,
|
|
0x60, 0x07, 0x60, 0x05, 0x03, 0x10, 0x00, 0x04 },
|
|
[DVBC_6] = { 0x32, 0x05, 0x86, 0x82, 0x50, 0x00, 0x06, 0x60,
|
|
0x40, 0x0e, 0x60, 0x05, 0x33, 0x10, 0x00, 0x04 },
|
|
[DVBC_8] = { 0x53, 0x03, 0x88, 0x82, 0x50, 0x00, 0x06, 0x60,
|
|
0x40, 0x0e, 0x60, 0x05, 0x33, 0x10, 0x00, 0x04 },
|
|
[ATSC] = { 0x51, 0x03, 0x83, 0x82, 0x40, 0x48, 0x01, 0xe0,
|
|
0x40, 0x0e, 0x60, 0x05, 0x03, 0x00, 0x80, 0x04 },
|
|
};
|
|
|
|
dev_dbg(&client->dev,
|
|
"delivery_system=%d frequency=%u bandwidth_hz=%u",
|
|
c->delivery_system, c->frequency, c->bandwidth_hz);
|
|
|
|
|
|
switch (c->delivery_system) {
|
|
case SYS_ATSC:
|
|
j = ATSC;
|
|
if_khz = dev->if_atsc;
|
|
break;
|
|
case SYS_DVBT:
|
|
case SYS_DVBT2:
|
|
if (c->bandwidth_hz == 0) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
} else if (c->bandwidth_hz <= 6000000) {
|
|
j = DVBT_6;
|
|
if_khz = dev->if_dvbt_6;
|
|
} else if (c->bandwidth_hz <= 7000000) {
|
|
j = DVBT_7;
|
|
if_khz = dev->if_dvbt_7;
|
|
} else if (c->bandwidth_hz <= 8000000) {
|
|
j = DVBT_8;
|
|
if_khz = dev->if_dvbt_8;
|
|
} else {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
break;
|
|
case SYS_DVBC_ANNEX_A:
|
|
case SYS_DVBC_ANNEX_C:
|
|
if (c->bandwidth_hz == 0) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
} else if (c->bandwidth_hz <= 6000000) {
|
|
j = DVBC_6;
|
|
if_khz = dev->if_dvbc_6;
|
|
} else if (c->bandwidth_hz <= 8000000) {
|
|
j = DVBC_8;
|
|
if_khz = dev->if_dvbc_8;
|
|
} else {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
dev_err(&client->dev, "unsupported delivery system=%d",
|
|
c->delivery_system);
|
|
goto err;
|
|
}
|
|
|
|
/* set delivery system dependent registers */
|
|
for (i = 0; i < 16; i++) {
|
|
ret = regmap_write_bits(dev->regmap, delsys_params[REG][i],
|
|
delsys_params[MASK][i], delsys_params[j][i]);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
|
|
/* set IF if needed */
|
|
if (dev->if_frequency != if_khz) {
|
|
utmp = DIV_ROUND_CLOSEST(if_khz, 50);
|
|
ret = regmap_write(dev->regmap, R26_IF, utmp);
|
|
if (ret)
|
|
goto err;
|
|
dev->if_frequency = if_khz;
|
|
dev_dbg(&client->dev, "set IF=%u kHz", if_khz);
|
|
|
|
}
|
|
|
|
ret = tda18250_set_agc(fe);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write_bits(dev->regmap, R1A_AGCK, 0x03, 0x01);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write_bits(dev->regmap, R14_AGC23, 0x40, 0x00);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* set frequency */
|
|
buf[0] = ((c->frequency / 1000) >> 16) & 0xff;
|
|
buf[1] = ((c->frequency / 1000) >> 8) & 0xff;
|
|
buf[2] = ((c->frequency / 1000) >> 0) & 0xff;
|
|
ret = regmap_bulk_write(dev->regmap, R27_RF1, buf, 3);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write(dev->regmap, R0A_IRQ3, TDA18250_IRQ_TUNE);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* initial tune */
|
|
ret = regmap_write(dev->regmap, R2A_MSM1, 0x01);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write(dev->regmap, R2B_MSM2, 0x01);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = tda18250_wait_for_irq(fe, 500, 10, TDA18250_IRQ_TUNE);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* calc ndiv and rdiv */
|
|
ret = tda18250_pll_calc(fe, &buf[0], &buf[1], &buf[2]);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write_bits(dev->regmap, R4F_XTALFLX3, 0xe0,
|
|
(buf[0] << 6) | (buf[1] << 5));
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* clear IRQ */
|
|
ret = regmap_write(dev->regmap, R0A_IRQ3, TDA18250_IRQ_TUNE);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write_bits(dev->regmap, R46_CPUMP, 0x07, 0x00);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write_bits(dev->regmap, R39_SD5, 0x03, 0x00);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* tune again */
|
|
ret = regmap_write(dev->regmap, R2A_MSM1, 0x01); /* tune */
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write(dev->regmap, R2B_MSM2, 0x01); /* go */
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = tda18250_wait_for_irq(fe, 500, 10, TDA18250_IRQ_TUNE);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* pll locking */
|
|
msleep(20);
|
|
|
|
ret = regmap_write_bits(dev->regmap, R2B_MSM2, 0x04, 0x04);
|
|
if (ret)
|
|
goto err;
|
|
|
|
msleep(20);
|
|
|
|
/* restore AGCK */
|
|
ret = regmap_write_bits(dev->regmap, R1A_AGCK, 0x03, 0x03);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = regmap_write_bits(dev->regmap, R14_AGC23, 0x40, 0x40);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* charge pump */
|
|
ret = regmap_write_bits(dev->regmap, R46_CPUMP, 0x07, buf[2]);
|
|
|
|
return 0;
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static int tda18250_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
|
|
{
|
|
struct i2c_client *client = fe->tuner_priv;
|
|
struct tda18250_dev *dev = i2c_get_clientdata(client);
|
|
|
|
*frequency = dev->if_frequency * 1000;
|
|
return 0;
|
|
}
|
|
|
|
static int tda18250_sleep(struct dvb_frontend *fe)
|
|
{
|
|
struct i2c_client *client = fe->tuner_priv;
|
|
struct tda18250_dev *dev = i2c_get_clientdata(client);
|
|
int ret;
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
/* power down LNA */
|
|
ret = regmap_write_bits(dev->regmap, R0C_AGC11, 0x80, 0x00);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* set if freq to 0 in order to make sure it's set after wake up */
|
|
dev->if_frequency = 0;
|
|
|
|
ret = tda18250_power_control(fe, TDA18250_POWER_STANDBY);
|
|
return ret;
|
|
}
|
|
|
|
static const struct dvb_tuner_ops tda18250_ops = {
|
|
.info = {
|
|
.name = "NXP TDA18250",
|
|
.frequency_min_hz = 42 * MHz,
|
|
.frequency_max_hz = 870 * MHz,
|
|
},
|
|
|
|
.init = tda18250_init,
|
|
.set_params = tda18250_set_params,
|
|
.get_if_frequency = tda18250_get_if_frequency,
|
|
.sleep = tda18250_sleep,
|
|
};
|
|
|
|
static int tda18250_probe(struct i2c_client *client)
|
|
{
|
|
struct tda18250_config *cfg = client->dev.platform_data;
|
|
struct dvb_frontend *fe = cfg->fe;
|
|
struct tda18250_dev *dev;
|
|
int ret;
|
|
unsigned char chip_id[3];
|
|
|
|
/* some registers are always read from HW */
|
|
static const struct regmap_range tda18250_yes_ranges[] = {
|
|
regmap_reg_range(R05_POWER1, R0B_IRQ4),
|
|
regmap_reg_range(R21_IF_AGC, R21_IF_AGC),
|
|
regmap_reg_range(R2A_MSM1, R2B_MSM2),
|
|
regmap_reg_range(R2F_RSSI1, R31_IRQ_CTRL),
|
|
};
|
|
|
|
static const struct regmap_access_table tda18250_volatile_table = {
|
|
.yes_ranges = tda18250_yes_ranges,
|
|
.n_yes_ranges = ARRAY_SIZE(tda18250_yes_ranges),
|
|
};
|
|
|
|
static const struct regmap_config tda18250_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = TDA18250_NUM_REGS - 1,
|
|
.volatile_table = &tda18250_volatile_table,
|
|
};
|
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (!dev) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
i2c_set_clientdata(client, dev);
|
|
|
|
dev->fe = cfg->fe;
|
|
dev->loopthrough = cfg->loopthrough;
|
|
if (cfg->xtal_freq < TDA18250_XTAL_FREQ_MAX) {
|
|
dev->xtal_freq = cfg->xtal_freq;
|
|
} else {
|
|
ret = -EINVAL;
|
|
dev_err(&client->dev, "xtal_freq invalid=%d", cfg->xtal_freq);
|
|
goto err_kfree;
|
|
}
|
|
dev->if_dvbt_6 = cfg->if_dvbt_6;
|
|
dev->if_dvbt_7 = cfg->if_dvbt_7;
|
|
dev->if_dvbt_8 = cfg->if_dvbt_8;
|
|
dev->if_dvbc_6 = cfg->if_dvbc_6;
|
|
dev->if_dvbc_8 = cfg->if_dvbc_8;
|
|
dev->if_atsc = cfg->if_atsc;
|
|
|
|
dev->if_frequency = 0;
|
|
dev->warm = false;
|
|
|
|
dev->regmap = devm_regmap_init_i2c(client, &tda18250_regmap_config);
|
|
if (IS_ERR(dev->regmap)) {
|
|
ret = PTR_ERR(dev->regmap);
|
|
goto err_kfree;
|
|
}
|
|
|
|
/* read the three chip ID registers */
|
|
regmap_bulk_read(dev->regmap, R00_ID1, &chip_id, 3);
|
|
dev_dbg(&client->dev, "chip_id=%02x:%02x:%02x",
|
|
chip_id[0], chip_id[1], chip_id[2]);
|
|
|
|
switch (chip_id[0]) {
|
|
case 0xc7:
|
|
dev->slave = false;
|
|
break;
|
|
case 0x47:
|
|
dev->slave = true;
|
|
break;
|
|
default:
|
|
ret = -ENODEV;
|
|
goto err_kfree;
|
|
}
|
|
|
|
if (chip_id[1] != 0x4a) {
|
|
ret = -ENODEV;
|
|
goto err_kfree;
|
|
}
|
|
|
|
switch (chip_id[2]) {
|
|
case 0x20:
|
|
dev_info(&client->dev,
|
|
"NXP TDA18250AHN/%s successfully identified",
|
|
dev->slave ? "S" : "M");
|
|
break;
|
|
case 0x21:
|
|
dev_info(&client->dev,
|
|
"NXP TDA18250BHN/%s successfully identified",
|
|
dev->slave ? "S" : "M");
|
|
break;
|
|
default:
|
|
ret = -ENODEV;
|
|
goto err_kfree;
|
|
}
|
|
|
|
fe->tuner_priv = client;
|
|
memcpy(&fe->ops.tuner_ops, &tda18250_ops,
|
|
sizeof(struct dvb_tuner_ops));
|
|
|
|
/* put the tuner in standby */
|
|
tda18250_power_control(fe, TDA18250_POWER_STANDBY);
|
|
|
|
return 0;
|
|
err_kfree:
|
|
kfree(dev);
|
|
err:
|
|
dev_dbg(&client->dev, "failed=%d", ret);
|
|
return ret;
|
|
}
|
|
|
|
static void tda18250_remove(struct i2c_client *client)
|
|
{
|
|
struct tda18250_dev *dev = i2c_get_clientdata(client);
|
|
struct dvb_frontend *fe = dev->fe;
|
|
|
|
dev_dbg(&client->dev, "\n");
|
|
|
|
memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
|
|
fe->tuner_priv = NULL;
|
|
kfree(dev);
|
|
}
|
|
|
|
static const struct i2c_device_id tda18250_id_table[] = {
|
|
{"tda18250", 0},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tda18250_id_table);
|
|
|
|
static struct i2c_driver tda18250_driver = {
|
|
.driver = {
|
|
.name = "tda18250",
|
|
},
|
|
.probe = tda18250_probe,
|
|
.remove = tda18250_remove,
|
|
.id_table = tda18250_id_table,
|
|
};
|
|
|
|
module_i2c_driver(tda18250_driver);
|
|
|
|
MODULE_DESCRIPTION("NXP TDA18250 silicon tuner driver");
|
|
MODULE_AUTHOR("Olli Salonen <olli.salonen@iki.fi>");
|
|
MODULE_LICENSE("GPL");
|